"Command line" commands are very helpful. Is there a command to display the memory of each partition of my drives..?
You can use
df like so:
which will show something like this:
Filesystem Size Used Avail Use% Mounted on /dev/sda5 56G 47G 6.8G 88% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 940M 4.0K 940M 1% /dev tmpfs 192M 996K 191M 1% /run none 5.0M 0 5.0M 0% /run/lock none 957M 5.1M 952M 1% /run/shm none 100M 44K 100M 1% /run/user
to give you information about the various mounted filesystems on your computer, and their free and used space.